A type of flip-type high-temperature gas isolation door

Abstract

This utility model relates to the technical field of duct auxiliary devices, and in particular to a flap-type high-temperature gas isolation door, comprising a mounting frame, wherein several drive shafts are movably mounted inside the mounting frame, and a drive mechanism is provided at one end of each drive shaft. A flap mechanism is provided on the outside of each drive shaft. Sealing seats that cooperate with the flap mechanisms are provided on the upper and lower sides inside the mounting frame. Mutually cooperating sealing mechanisms are provided between adjacent flap mechanisms and between the flap mechanisms and the sealing seats. The flap-type high-temperature gas isolation door designed in this utility model improves the sealing effect by providing sealing mechanisms on the upper and lower sides of the flap's windward and leeward sides. When the flap is closed, adjacent flaps can be squeezed and sealed by the sealing mechanisms, thus solving the problem that wear of the sealing strip easily damages the sealing effect when using traditional contact sealing.

Description

Technical Field

[0001] This utility model relates to the field of air duct auxiliary device technology, and in particular to a flap-type high-temperature gas isolation door. Background Technology

[0002] Isolation doors, as primary isolation devices, are crucial in coal mills, boiler systems, and desulfurization and denitrification systems. When coal mills, desulfurization equipment, or denitrification equipment are in operation, isolation doors must be reliably opened to allow rapid passage of the flowing medium; when these equipment are in standby or under maintenance, isolation doors must provide secure isolation because the flowing medium contains not only toxic but also corrosive gases.

[0003] A public disclosure (announcement) number: CN215410246U discloses a single-axis double-baffle gate for power plant desulfurization that is easy to install and adjust. It discloses that the gate "includes a frame, with a first baffle gate and a second baffle gate respectively positioned in the middle of the frame. A third rotating shaft is fixedly connected to the rear end of the first baffle gate, and the rear end of the third rotating shaft is rotatably connected to one side of the inner side of the frame. A fourth rotating shaft is fixedly connected to the rear end of the second baffle gate, and the rear end of the fourth rotating shaft is rotatably connected to the other side of the inner side of the frame. A second sealing strip is provided in the center of each of the four sides of the inner side of the frame." In this utility model, after closing, the first sealing strips at the top and bottom of the first baffle gate are compressed against the third sealing strip at the bottom of the second baffle gate and the second sealing strip on the left side of the inner frame, achieving a seal. Similarly, the third sealing strip at the top of the second baffle gate is compressed against the second sealing strip on the right side of the inner frame, achieving a seal. Simultaneously, the fourth sealing strips at the front and rear of the first and second baffle gates, and then the second sealing strips on the front and rear sides of the inner frame, are pressurized, achieving a seal. The sealing effect is good and it is worthy of widespread promotion.

[0004] The device features sealing strips at the ends of adjacent flaps. When closed, after the flaps rotate to their final position, the adjacent flaps contact and seal through the sealing strips. The flapping operation environment is harsh, characterized by high temperature, high dust, and high corrosion, making the sealing strips highly susceptible to wear. Furthermore, the seal between adjacent sealing strips is a basic seal; once the sealing strips wear down, the sealing performance of the isolation door will be compromised. In addition, isolation doors used in denitrification and desulfurization systems are generally large in size. In some cases, directly mounting the flaps onto the rotating shaft makes it inconvenient to disassemble and reassemble the flaps if they break or deform. Therefore, we propose a flap-type high-temperature gas isolation door to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a flap-type high-temperature gas isolation door.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a flap-type high-temperature gas isolation door, comprising an installation frame, wherein a plurality of drive shafts are movably installed inside the installation frame, one end of each drive shaft is provided with a drive mechanism, and a flap mechanism is provided outside each drive shaft. Sealing seats that cooperate with the flap mechanisms are provided on the upper and lower sides inside the installation frame. Sealing mechanisms that cooperate with each other are provided between adjacent flap mechanisms and between flap mechanisms and sealing seats. Adjacent flap mechanisms and between flap mechanisms and sealing seats are sealed by compression through the sealing mechanisms. The flap mechanism includes a combined flap one, a combined flap two, and a plurality of connecting screws passing through the combined flap one. The connecting screws can be threadedly connected to the combined flap two.

[0007] Preferably, several bearing seats are fixedly installed on both the left and right sides of the mounting frame, and the drive shaft is movably mounted on the mounting frame through the bearing seats. The bearing seats restrict the drive shaft and ensure the stability of the drive shaft when it rotates after installation.

[0008] Preferably, the overall axial cross section of the flap mechanism is rhomboid, and several flap mechanisms are evenly distributed inside the mounting frame. The end coverage length of adjacent flap mechanisms is 2-5cm, ensuring that after several flap mechanisms are closed, they can be squeezed and sealed by the sealing mechanism, thereby improving the sealing effect.

[0009] Preferably, both the first and second combined flip plates are provided with a mounting base that mates with the drive shaft. The inner wall of the mounting base is provided with a positioning key, and the outer side of the drive shaft is provided with a positioning groove that mates with the positioning key. The positioning keys on the first and second combined flip plates are correspondingly engaged in the positioning grooves on the outer side of the drive shaft, ensuring that the first and second combined flip plates and the drive shaft can stably transmit power.

[0010] Preferably, the first and second combined flaps are hollow structures, and the second combined flap is provided with a threaded seat that mates with the connecting screw. The first and second combined flaps are connected to the threaded seat by the connecting screw, making disassembly and assembly simple.

[0011] Preferably, the sealing mechanism includes a first rubber sealing gasket and a second rubber sealing gasket. The first rubber sealing gasket and the second rubber sealing gasket are provided with mutually cooperating wavy sealing parts. Adjacent flap mechanisms can be squeezed and sealed by the sealing mechanism to improve the sealing effect. The wavy sealing parts on the first rubber sealing gasket and the second rubber sealing gasket increase the effective sealing area.

[0012] Preferably, the length of the sealing mechanism is the same as the length of the flip mechanism and the width of the inner side of the mounting frame. The first rubber sealing gasket and the second rubber sealing gasket are glued to the lower part of the windward side of the flip mechanism or the upper part of the leeward side or the sealing seat, so as to ensure that after several flip mechanisms are closed, the first rubber sealing gasket and the second rubber sealing gasket on the adjacent flip mechanisms and the sealing seat can be squeezed to seal.

[0013] Preferably, the drive mechanism includes a transmission link, a drive link, and a drive cylinder. The number of transmission links is the same as the number of transmission shafts, and they are fixedly mounted on one end of the transmission shaft. The drive link is hinged to the other end of the transmission link. The output shaft of the drive cylinder is movably connected to the drive link. The drive cylinder drives the drive link to move up or down, and through the transmission links, drives the transmission shafts to rotate, thereby driving multiple flip-plate mechanisms to rotate synchronously.

[0014] This utility model has the following beneficial effects:

[0015] This utility model designs a flap-type high-temperature gas isolation door. By setting a sealing mechanism on the upper and lower sides of the flap's windward and leeward sides, when the flap is closed, adjacent flaps can be squeezed and sealed by the sealing mechanism, improving the sealing effect. This solves the problem that the sealing strip wear can easily damage the sealing effect when in contact sealing. In addition, rubber sealing gasket one and rubber sealing gasket two are provided with mutually cooperating wavy sealing parts, increasing the effective sealing area and further improving the sealing effect.

[0016] The flip-type high-temperature gas isolation door designed in this utility model consists of a flip-plate 1 and a flip-plate 2. The flip-plate mechanism ensures that the opening and closing of the installation frame can be controlled when the flip-plate mechanism rotates. At the same time, the flip-plate 1 and the flip-plate 2 are connected by connecting screws, which makes disassembly and assembly simple and reduces the difficulty of maintenance and replacement of the flip-plate mechanism. In addition, positioning keys and positioning grooves are provided to ensure stable transmission between the flip-plate 1, the flip-plate 2 and the transmission shaft. Attached Figure Description

[0017] Figure 1 This is a structural schematic diagram of one side of the present invention;

[0018] Figure 2 This is a schematic diagram of the structure on the other side of the entire utility model;

[0019] Figure 3 This is a schematic diagram of the side cross-section of the mounting frame of this utility model;

[0020] Figure 4 This utility model Figure 3 An enlarged structural diagram at point A;

[0021] Figure 5This is a schematic diagram of the exploded structure of the flip-plate mechanism of this utility model;

[0022] Figure 6 This is a schematic diagram of the drive mechanism of this utility model.

[0023] Legend:

[0024] 1. Mounting frame; 2. Bearing housing; 3. Drive shaft; 4. Flipping mechanism; 41. Combined flipping plate one; 42. Combined flipping plate two; 43. Mounting base; 44. Positioning key; 45. Positioning groove; 46. Connecting screw; 5. Drive mechanism; 51. Transmission connecting rod; 52. Drive connecting rod; 53. Drive cylinder; 6. Sealing mechanism; 61. Rubber sealing gasket one; 62. Rubber sealing gasket two; 7. Sealing seat. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Please refer to Figures 1 to 6 This utility model provides a technical solution: a flap-type high-temperature gas isolation door, including a mounting frame 1. Several drive shafts 3 are movably mounted inside the mounting frame 1. A drive mechanism 5 is provided at one end of each drive shaft 3. A flap mechanism 4 is provided on the outside of each drive shaft 3. The drive mechanism 5 can drive the drive shafts 3 and the flap mechanism 4 to rotate, thereby controlling the opening and closing of the mounting frame 1. Sealing seats 7 that cooperate with the flap mechanism 4 are provided on the upper and lower sides inside the mounting frame 1. The sealing seats 7 at the upper and lower positions can assist in sealing the flap mechanisms 4 above and below. Mutually cooperating mechanisms are provided between adjacent flap mechanisms 4 and between the flap mechanism 4 and the sealing seats 7. The sealing mechanism 6 provides compression sealing between adjacent flapping mechanisms 4 and between flapping mechanism 4 and sealing seat 7. Adjacent flapping mechanisms 4 can be compressed and sealed by the sealing mechanism 6, improving the sealing effect. The wavy sealing parts on rubber sealing gasket 1 61 and rubber sealing gasket 2 62 increase the effective sealing area. The flapping mechanism 4 includes combined flapping 1 41, combined flapping 2 42, and several connecting screws 46 passing through combined flapping 1 41. The connecting screws 46 can be threadedly connected to combined flapping 2 42. Combined flapping 1 41 and combined flapping 2 42 are connected by connecting screws 46, which makes disassembly and assembly simple and reduces the difficulty of maintenance and replacement of flapping mechanism 4.

[0027] As a further implementation of the above technical solution: several bearing seats 2 are fixedly installed on both the left and right sides of the mounting frame 1. The drive shaft 3 is movably installed on the mounting frame 1 through the bearing seats 2. The bearing seats 2 restrict the drive shaft 3 to ensure the stability of the axial position of the drive shaft 3 after installation, and at the same time enable the drive shaft 3 to rotate stably.

[0028] As a further implementation of the above technical solution: the overall axial section of the flap mechanism 4 is rhomboid. When the flap mechanism 4 is opened, the resistance generated by the flap mechanism 4 to the flow of the medium is reduced. Several flap mechanisms 4 are evenly distributed inside the mounting frame 1. The end coverage length of adjacent flap mechanisms 4 is 2-5cm, which ensures that after several flap mechanisms 4 are closed, they can be squeezed and sealed by the sealing mechanism 6, thereby improving the sealing effect.

[0029] As a further implementation of the above technical solution: both the first combination flip plate 41 and the second combination flip plate 42 are provided with a mounting base 43 that mates with the drive shaft 3. When installing the first combination flip plate 41 and the second combination flip plate 42, the mounting base 43 is fitted onto the outside of the drive shaft 3 to ensure that the first combination flip plate 41 and the second combination flip plate 42 can be precisely fitted together. The inner wall of the mounting base 43 is provided with a positioning key 44, and the outside of the drive shaft 3 is provided with a positioning groove 45 that mates with the positioning key 44. The positioning key 44 on the first combination flip plate 41 and the second combination flip plate 42 is correspondingly engaged in the positioning groove 45 on the outside of the drive shaft 3 to ensure that the first combination flip plate 41 and the second combination flip plate 42 can stably transmit power to the drive shaft 3.

[0030] As a further implementation of the above technical solution: the combined flap 1 41 and combined flap 2 42 are hollow structures, which reduces the overall weight of the flap mechanism 4 and thus reduces the resistance of the transmission shaft 3 to drive the flap mechanism 4 to rotate. The combined flap 2 42 is provided with a threaded seat that cooperates with the connecting screw 46. The combined flap 1 41 and combined flap 2 42 are connected to the threaded seat by the connecting screw 46, which makes disassembly and assembly simple and reduces the difficulty of maintenance and replacement of the flap mechanism 4.

[0031] As a further implementation of the above technical solution: the sealing mechanism 6 includes a rubber sealing gasket 61 and a rubber sealing gasket 62. The rubber sealing gasket 61 and the rubber sealing gasket 62 are provided with mutually cooperating wavy sealing parts. The adjacent flapping mechanism 4 can be squeezed and sealed by the sealing mechanism 6 to improve the sealing effect. The wavy sealing parts on the rubber sealing gasket 61 and the rubber sealing gasket 62 increase the effective sealing area and further improve the sealing effect.

[0032] As a further implementation of the above technical solution: the length of the sealing mechanism 6 is the same as the length of the flip mechanism 4 and the width of the inner side of the mounting frame 1, ensuring that the sealing mechanism 6 can effectively seal between adjacent flip mechanisms 4 and between the flip mechanism 4 and the sealing seat 7. Rubber sealing gasket 1 61 and rubber sealing gasket 2 62 are glued to the lower part of the windward side of the flip mechanism 4 or the upper part of the leeward side or the sealing seat 7, ensuring that after several flip mechanisms 4 are closed, the rubber sealing gasket 1 61 and rubber sealing gasket 2 62 on adjacent flip mechanisms 4 and the sealing seat 7 can be squeezed to seal. Rubber sealing gasket 2 62 is glued to the upper sealing seat 7, and rubber sealing gasket 1 61 is glued to the lower sealing seat 7.

[0033] As a further implementation of the above technical solution: the drive mechanism 5 includes a transmission link 51, a drive link 52, and a drive cylinder 53. The number of transmission links 51 is the same as that of the transmission shafts 3, and they are fixedly mounted on one end of the transmission shafts 3. The drive link 52 is hinged to the other end of the transmission link 51. The output shaft of the drive cylinder 53 is movably connected to the drive link 52. The drive cylinder 53 drives the drive link 52 to move up or down, and through the transmission links 51, drives the transmission shafts 3 to rotate, thereby driving multiple flip-plate mechanisms 4 to rotate synchronously, so as to open or close the mounting frame 1.

[0034] Working principle:

[0035] When using this utility model, the drive cylinder 53 drives the drive linkage 52 to move upward, and through several transmission linkages 51, drives several transmission shafts 3 to rotate, thereby driving multiple flap mechanisms 4 to rotate synchronously, thus opening the mounting frame 1; the drive linkage 52 drives the drive cylinder 53 to move downward, and through several drive linkages 52, drives several transmission linkages 51 to rotate, thereby driving multiple flap mechanisms 4 to rotate synchronously, thus closing the mounting frame 1; when the flap mechanism 4 is closed, the rubber sealing gasket 1 61 and rubber sealing gasket 2 62 on the windward and leeward sides of the flap mechanism 4 press against each other, while the rubber sealing gasket 1 61 on the leeward side of the uppermost flap mechanism 4 presses against the rubber sealing gasket 2 62 on the uppermost sealing seat 7, and the rubber sealing gasket 2 62 on the windward side of the lowermost flap mechanism 4 presses against the rubber sealing gasket 2 62 on the lowermost sealing seat 7. The rubber sealing gasket 61 is compressed to seal the adjacent flapping mechanisms 4 and the seal between the flapping mechanism 4 and the sealing seat 7 through the sealing mechanism 6. At the same time, the rubber sealing gasket 61 and the rubber sealing gasket 62 are provided with mutually cooperating wave-shaped sealing parts to increase the effective sealing area. When the flapping mechanism 4 is damaged or needs to be repaired and maintained, the connecting screws 46 on the combined flapping 41 and the combined flapping 42 can be unscrewed and the combined flapping 41 and the combined flapping 42 can be removed along the outside of the drive shaft 3. When installing the combined flapping 41 and the combined flapping 42, the combined flapping 41 and the combined flapping 42 are fitted onto the outside of the drive shaft 3 through the mounting bracket 43, and the positioning key 44 is engaged in the positioning groove 45 on the outside of the drive shaft 3 to ensure stable transmission between the combined flapping 41 and the combined flapping 42 and the drive shaft 3.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high temperature gas insulated door with flap, comprising a mounting frame (1), a plurality of transmission shafts (3) are movably mounted in the inside of the mounting frame (1), one end of the plurality of transmission shafts (3) is provided with a driving mechanism (5), characterized in that: A flap mechanism (4) is provided on the outside of several of the drive shafts (3). A sealing seat (7) that cooperates with the flap mechanism (4) is provided on the upper and lower sides of the mounting frame (1). A sealing mechanism (6) that cooperates with each other is provided between adjacent flap mechanisms (4) and between flap mechanism (4) and sealing seat (7). Adjacent flap mechanisms (4) and between flap mechanism (4) and sealing seat (7) are squeezed and sealed by sealing mechanism (6). The flap mechanism (4) includes a combined flap one (41), a combined flap two (42) and several connecting screws (46) passing through combined flap one (41). The connecting screws (46) can be threadedly connected to combined flap two (42).

2. A flipper-type high-temperature gas-insulated door according to claim 1, characterized in that: Several bearing seats (2) are fixedly installed on both the left and right sides of the mounting frame (1), and the transmission shaft (3) is movably installed on the mounting frame (1) through the bearing seats (2).

3. A flap-type high-temperature gas isolation door according to claim 1, characterized in that: The overall axial cross section of the flipping mechanism (4) is rhomboid, and several flipping mechanisms (4) are evenly distributed inside the mounting frame (1), with the end coverage length of adjacent flipping mechanisms (4) being 2-5cm.

4. A flap-type high-temperature gas isolation door according to claim 1, characterized in that: Both the first combined flap (41) and the second combined flap (42) are provided with a mounting base (43) that cooperates with the drive shaft (3). The inner wall of the mounting base (43) is provided with a positioning key (44), and the outside of the drive shaft (3) is provided with a positioning groove (45) that cooperates with the positioning key (44).

5. A flap-type high-temperature gas isolation door according to claim 1, characterized in that: The combined flap 1 (41) and combined flap 2 (42) are hollow structures. The combined flap 2 (42) has a threaded seat inside that mates with the connecting screw (46).

6. A flap-type high-temperature gas isolation door according to claim 1, characterized in that: The sealing mechanism (6) includes a rubber sealing gasket one (61) and a rubber sealing gasket two (62), and the rubber sealing gasket one (61) and the rubber sealing gasket two (62) are provided with corrugated sealing parts that cooperate with each other.

7. A flap-type high-temperature gas isolation door according to claim 6, characterized in that: The length of the sealing mechanism (6) is the same as the length of the flip mechanism (4) and the width of the inner side of the mounting frame (1). The first rubber sealing gasket (61) and the second rubber sealing gasket (62) are glued to the bottom of the windward side of the flip mechanism (4) or the top of the leeward side or the sealing seat (7).

8. A flap-type high-temperature gas isolation door according to claim 1, characterized in that: The drive mechanism (5) includes a transmission link (51), a drive link (52), and a drive cylinder (53). The number of transmission links (51) is the same as that of the transmission shaft (3), and they are fixedly mounted on one end of the transmission shaft (3). The drive link (52) is hinged to the other end of the transmission link (51), and the output shaft of the drive cylinder (53) is movably connected to the drive link (52).

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